Cooking-range



NITED sTATEs PATENT oEEIcE.'

GEO. S. G. SPENOE, OF BOSTON, MASSACHUSETTS.

COOKING-RANGE.

Specification of Letters Patent No. 9,393, dated November 9, 1852.

To LU whom it may concern:

Be it known that I, GEORGE S. Gr. SPENCE, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in the Elevated-Oven Cooking-Range; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings', letters, figures, and references thereof.

Of the said drawings Figure l denotes a front elevation of my improved cooking range. Fig. 2 is a vertical and transverse section of it taken through the fire grate and on a line from A to B of Fig. l. Fig. 3 is a vertical and transverse section of it taken through the middle of the oven or on a line from O to D of Fig. 1. Fig. 4 is a horizontal section of it taken on line from E to F Fig. l and through the Hues over and against the top of the oven. Fig. 5 is a horizontal section of it taken on the line G, I-I, Fig. l and so as to exhibit the Hues underneath the oven. Fig. G is a vertical and transverse section of it taken on a line from I to K Fig. l and through those side Hues of the oven which are next adjacent to the Hre place. Fig. 7 is a transverse and vertical section of it taken on a line from L to M Fig. 1 and through the Hues that run against the other side of the oven.

In the said drawings N represents the chamber for combustion of the fuel, O being the tire grate and P the ash pit thereof. Over this chamber of combustion is a Hue space V, that extends under a boiling chamber Q, and has orifices R, S', U', V made through its top T, such orifices being for the reception of boiling vessels or what are termed front and rear boilers.

The oven seen at U is what is usually termed among manufacturers of cooking ranges an elevated oven this term being given to it because it is placed above the tire place. It may be placed on the right or left hand side of the fire place, as occasion may require.

Underneath the reai" part of the bottom a, of the oven, a flue A is carried and led transversely across, or from side b, to side o of the oven. This Hue opens out of the Hue space V, and into a vertical Hue B that extends upward and along the rear part of the side c of the oven. The upper part of the Hue B opens into a Hue G that descends against the front part or remainder of the side c of the oven, ,and opens into what I term a reservoir Hue D which runs underneath and against the bottom a, of the oven, and from the side o to the side o. The said reservoir Hue I make much larger in its de'pth or transverse dimensions than the Hue A in order that it may hold a larger or great quantity of hot air. The said reservoir Hue I make to terminate at its front end against a cast iron or metallic plate e which constitutes part of the side of the chamber of combustion, and this in order that additio-nal heat from the fuel in combustion may be radiated through such plate and into the reservoir Hue.

The reservoir Hue is made to open into a horizontal Hue E which runs backward of the top of the oven and across the oven and opens upward into another horizontal Hue F which runs forward againstthe remainder of the side b of the oven and opens into a Hue G that runs across the top plate f of the oven and from the side Z9 to the side c and over and against the front part of the said top plate. The said Hue Gopens into a Hue H that runs over the rear part of the top of the oven and across the oven from the side c to the side and finally opens into the chimney or a Hue leading into the same.

Through the partition or plate g that forms the lower boundary of the side Hue E two Hue openings 7L, z', are made so as to respectively connect the said Hue Ilv with the Hues A and D. A sliding damper or valve 7c is appplied to the two openings L, z', so that it can be made to close either of them at pleasure, the rod Z of such damper being made to extend through the front plate m that supports the oven'doors n, 0.

Against the rear end 2J of the oven there is a narrow chamber or space g which is made to open out of the Hue A so as to allow heat to radiate or pass out of such Hue and into the said space Q while the main draft of the volatile products of combust-ion is through the Hues A, B, O', D, E, F, G', and H. By taking hold of the damper rod and drawing the damper forward so as to cover the front one of the two openings h, z', the main or direct draft will be made to pass directly upward from the Hue A into the Hue F without coursing through the Hues A B, O, D, and E, they receiving heat only by lateral radiation from such draft or current. When the rear one of the openings h, z', is closed by the damper and the front one is opened the main draft is made to pass through all the fines.

By my improved arrangement of iiues it will be perceived that I am enabled to heat the top, the bottom, and the two sides by draft flu'es applied against each of them. I do not simply employ the main draft flues against the top and bottom only, and use radiating chambers against the two sides and rear end of the oven, but I not only heat the top and bottom of the oven by direct draftI ues, but I heat both of the sides of it by such flues while the rear end only is heated by a radiating chamber. esides this by bringing the front end of the reservoir `flue direct-ly against the side plate of the fire place I obtain the advantage of an increase of radiation of heat into it whereby I am not only enabled to stimulate or improve the draft but to supply it with heat so as to partially or wholly make up for the amount lO-st by radiation in passing through the tlues A, B', C', D.

My particular combination and arrangement of draft flues and radiating chamber as applied in the above described manner to the bottom, top, two sides, and end and as disposed with respect to the lire place renders me able to obtain a greater equality of heat in the oven and a better distribution of the direct draft around the surface of the oven than can be obtained where draft iues are applied to the top and bottom only and combined with radiating chambers applied to the sides and end or when draft iiues are applied to the sides and connect with a single flue at top and bottom of the oven.

What I claim as my invention is- My improved combination of a heat radiating chamber applied to t-he rear end, and

two draft iiues applied to each of the four faces at top, bottom, and two sides of an elevated oven of a cooking range, that is to say I claim the combination of the heat radiating .chamber g (against the end of the oven) t-wo draft flues A, D, (against the bottom of the oven) two flues B, C, (against one side of the oven), two draft iues E, F, (against the other side of the oven), and two draft iues G', H, (against the top of the oven), all connected and made to operate together substantially as specified, my said combination of fines as they are above arranged causing the smoke and other volatile products of combustion to pass from the back of the flue space under the boiling chamber into a flue leading under the rear part of the oven and transversely across or from side to side of the oven, thence up a flue leading against t-he side of the oven, thence down a flue leading against such side of the oven, thence into a reservoir flue leading transversely across and under and against the bottom of the oven, thence upward into and through a flue leading horizontally and along the ot-her side of the oven and from front to rear of it, thence into GEO. S. Gr. SPENCE.

Witnesses:

R. I-I. EDDY, FRANCIS GOULD. 

